#! /usr/bin/perl5
use Socket;
$host = shift || 'localhost';
$port = shift || 'echo';
$port = getservbyname( $port, 'udp' ) if $port =~ /\D/;
$peer = sockaddr_in( $port, inet_aton( $host ) );
socket( S, PF_INET, SOCK_DGRAM, 0 ) || die "socket failed $!";
while ( $line = <STDIN> )
{
	defined( send( S, $line, 0, $peer ) ) || die "send failed $!";
	defined( recv( S, $line, 120, 0 ) ) || die "recv failed $!";
	print $line;
}